CVE-2021-41159

NameCVE-2021-41159
DescriptionFreeRDP is a free implementation of the Remote Desktop Protocol (RDP), released under the Apache license. All FreeRDP clients prior to version 2.4.1 using gateway connections (`/gt:rpc`) fail to validate input data. A malicious gateway might allow client memory to be written out of bounds. This issue has been resolved in version 2.4.1. If you are unable to update then use `/gt:http` rather than /gt:rdp connections if possible or use a direct connection without a gateway.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
NVD severitymedium
Debian Bugs1001061

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
freerdp (PTS)stretch1.1.0~git20140921.1.440916e+dfsg1-13+deb9u3vulnerable
stretch (security)1.1.0~git20140921.1.440916e+dfsg1-13+deb9u4vulnerable
freerdp2 (PTS)buster2.0.0~git20190204.1.2693389a+dfsg1-1+deb10u2vulnerable
bookworm, sid, bullseye2.3.0+dfsg1-2vulnerable

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
freerdpsource(unstable)(unfixed)
freerdp2source(unstable)(unfixed)1001061

Notes

[bullseye] - freerdp2 <no-dsa> (Minor issue)
[buster] - freerdp2 <no-dsa> (Minor issue)
[stretch] - freerdp <no-dsa> (Minor issue)
https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-vh34-m9h7-95xq
https://github.com/FreeRDP/FreeRDP/commit/d39a7ba5c38e3ba3b99b1558dc2ab0970cbfb0c5 (Stable 2.0 backports)
https://github.com/FreeRDP/FreeRDP/commit/f0b44da67c09488178000725ff9f2729ccfdf9fe

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